The (10” pole cap diameter) precision magnet is water-cooled, with the water flow in series with the power supply. Its auto tune capabilities make it as easy to use as a standard cavity. The cavity provides outstanding performance with powder, single crystal and even aqueous samples. Combined with a specially tuned low noise Gunn source bridge, and the SignalMaster, the SHQ provides the ultimate in sensitivity. The new Bruker Super High Q (SHQ) cavity combines a super high Q (Qu >25000) with a large filling factor and large modulation coils. Classical high Q cavities such as the cylindrical TE0 have relatively poor filling factors, thus reducing the effect of their high Q. The filling factor is the ratio of the integral of the microwave field over the sample volume relative to the integral of the total microwave field in the cavity.

However, also it needs to be considered the cavity's filling factor and the quality of the microwave source. Generally, a higher Q means higher sensitivity. The quality factor (Q) of the resonator acts like an amplifier for both the incident power and the signal. It provides new levels of X-band CW flexibility. The new Super High Sensitivity Resonator is the new standard resonator for the eleXsys line. Other features: coarse frequency readout to 3 digits, or to a resolution of 1 kHz if the frequency counter feature (L to X band) is included, remote control of all bridges via the same control unit, protection against damage through user error, output power can be stepped in 1dB increments with an accuracy of typically +/- 0.2 dB from 0 dB to 60 dB, direct digital power readout in mW, W, or nW, high dynamic range AFC frequency locking, with frequency response and gain matched to the source oscillator characteristics, and finally, ultra low-noisemicrowave pre-amplifiers. When used with the large size L-band resonator, true in vivo EPR is possible.

The frequency ranges from 1.05 to 1.15 GHz. The L-band bridge can provide up to 400 mW microwave power for a variety of EPR studies. (This instrument does not have in vivo imaging capabilities but it is suited to be upgraded by adding a few accessories). It has two bands: the X-band, the most common microwave frequency because it combines high sensitivity with convenient sample sizes and the L-band, for large biologicalor aqueous samples. The microwave bridge of a spectrometer produces the microwave power and detects the EPR signal: its performance greatly determines the overall specifications of a spectrometer.The eleXsys series microwave bridges incorporate the latest state-of-the-art technology to provide the highest sensitivity measurements in different frequencies for eleXsys E 500/580 systems.

Bruker epr iris motor